|Scientific Name:||Parachondrostoma arrigonis|
|Species Authority:||(Steindachner, 1866)|
Chondrostoma arrigonis (Steindachner, 1866)
|Red List Category & Criteria:||Critically Endangered A2ace; B2ab(i,ii,iii,iv,v) ver 3.1|
|Reviewer(s):||Carmona, J. & Darwall, W. (Mediterranean Workshop, Dec. 2004)|
Doadrio undertook a 3-month study of all the Jucar river basin and found only 10 individuals of C. arrigonis at one location (Doadrio, I. pers comm). A canal constructed between the Jucar basin and the Trasinase Tajo-Seguna has allowed C. polylepis to enter and out compete C. arrigonis. Based upon this study and previous information it has been observed that that the population has declined by more than 80% in the past 10 years. The area of occupancy (AOO) of the remaining location is estimated at <10 km², qualifying the species for the Critically Endangered category, and the Jucar river basin is considered to be one location due to the nature of the main threat: introduced species.
|Range Description:||It is restricted to the Jucar river basin in eastern Spain.|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||A recent 3-month study found only 10 individuals at one location in the Jucar river basin (Doadrio, I. pers. comm).|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||It lives in all river sections, but mainly in the middle reaches.|
|Major Threat(s):||Water pollution and extraction, introduction of fish exotic predators. And Chondrostoma polylepis, a competitor, has been introduced.|
Doadrio, I. 2001. Atlas y libro rojo de los peces continentale de Espana. Madrid MMA, CSIC.
Elvira, B. 1995. Conservation status of endemic freshwater fish in Spain. Biological Conservation 72: 129–136.
Elvira, B. 1997. Taxonomy of the genus Chondrostoma (Osteichthyes, Cyprinidae): an updated review. Folia Zoologica 46 (Suppl. I): 1–14.
IUCN. 2006. 2006 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 04 May 2006.
|Citation:||Crivelli, A.J. 2006. Parachondrostoma arrigonis. The IUCN Red List of Threatened Species 2006: e.T61363A12468110. . Downloaded on 06 May 2016.|
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